Compares his observations for some stars with the observations of TM.
Showing 61–76 of 76 items
The Sir John Herschel Collection
The preparation of the print Calendar of the Correspondence of Sir John Herschel (Michael J. Crowe ed., David R. Dyck and James J. Kevin assoc. eds, Cambridge, England: Cambridge Univ. Press, 1998, viii + 828 pp) which was funded by the National Science Foundation, took ten years. It was accomplished by a team of seventeen professors, visiting scholars, graduate students, advanced undergraduates, and staff working at the University of Notre Dame.
The first online version of Calendar was created in 2009 by Dr Marvin Bolt and Steven Lucy, working at the Webster Institute of the Adler Planetarium, and it is that data that has now been reformatted for incorporation into Ɛpsilon.
Further information about Herschel, his correspondence, and the editorial method is available online here: http://historydb.adlerplanetarium.org/herschel/?p=intro
No texts of Herschel’s letters are currently available through Ɛpsilon.
Compares his observations for some stars with the observations of TM.
[Postscript to a letter by Margaret Herschel:] JH notes that he has finished the reduction of the first 9 hours in Right Ascension of his southern nebulae and double stars.
Polishing telescope mirrors.
Comments on William Whewell's and Charles Babbage's writings, together with family news.
Is trying to expedite the shipping back to England of part of the zoological collection of Andrew Smith.
Asks TM to attend a meeting of the Cape of Good Hope Association for Exploring Central Africa.
Talks about the very hot weather, and some matters of business that JH needs to work out with TM.
Some minor matters of astronomical business followed by an extended list of principles on which a constellation reform might be undertaken.
JH's observations disagree with JD's 'Catalogues of Nebulae and Double Stars' [observed at Paramatta, Australia]. Believes errors lie in JD's work. Will send copy of JH's catalogue as soon as it is printed. [8pp of notes extracted by JH from JD's catalog; 7 pp of JH's comments, written in another hand, about these notes.]
Reports observations of the 'remarkable' increase in magnitude of the 'nebulous' star Eta Argus.
Reports observations of the 'remarkable' increase in magnitude of the 'nebulous' star Eta Argus.
Observations regarding the nebulous star 1281.
Describes his observational activities, especially the discovery of the variable nature of Eta Argo, and the rediscovery of the sixth satellite of Saturn.
About the remarkably bright variable star, Eta Argus.
Intricate enquiries at Paramatta observatory are a waste of time. Instruments are not first class. Energy would be better spent cataloguing smaller magnitude stars and measuring double stars. Urges triangulation survey, important for Asian and Pacific geography, and investigation of weights and measures, to avoid litigation as Australia develops.
An extended statement of the importance of the observatory at Parramatta, Australia.